Querying and Manipulating Temporal Databases

Details Querying and Manipulating Temporal Databases Querying and Manipulating Temporal Databases

2011-03-03

arxiv.org/abs/1103.0686v1

International Journal of Database Management Systems (IJDMS), February 2011, Volume 3, Number 1

Computer Science

Databases

Scientific paper

Many works have focused, for over twenty five years, on the integration of the time dimension in databases (DB). However, the standard SQL3 does not yet allow easy definition, manipulation and querying of temporal DBs. In this paper, we study how we can simplify querying and manipulating temporal facts in SQL3, using a model that integrates time in a native manner. To do this, we propose new keywords and syntax to define different temporal versions for many relational operators and functions used in SQL. It then becomes possible to perform various queries and updates appropriate to temporal facts. We illustrate the use of these proposals on many examples from a real application.

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